UNS S31803 FLANGE, A182 UNS S31803 Duplex stainless steel Flange,A182 F51 Welding neck flange,Blind flanges
A182 F51,UNS S31803 is a typical duplex steel grade with a ferritic-austenitic microstructure. The alloy consists of around 40-50% ferrite in the annealed condition.
China UNS S31803 Flange Specification
ASME /ANSI B16.5, B16.47 A182 F51 UNS S31803 FLANGES SPECIFICATION
| Type | Welding Neck Flange/Slip on Flange/Blind Flanges |
| Size | 1/2″~48″ DN15~DN1200 |
| Class | 150#,300#,600#,900#,1500#,2500#,3000# |
| Standard | ANSI, ASTM,DIN, JIS, BS, etc |
| Material： | A182 F51 UNS S31803 |
| Application | Oil & Gas , Petroleum, Natural Gas, Electric Power, Industrial, Shipbuilding, etc. |
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We are a professional manufacturer of steel forged flange .
duplex stainless stainless steel :A 182 F51 Flange/F53/F44/F55/F60/F61 Duplex stainless steel Flange
Technical Data Sheet
| UNS S31803 Flange Chemical Composition Limits | |||||||||
| Weight% | C | Mn | P | S | Si | Cr | Ni | Mo | N |
| Duplex F51 | 0.03 max | 2.0 max | 0.03 max | 0.02 max | 1 max | 21-23 | 4.5-6.5 | 2.5-3.5 | 0.80-0.20 |
UNS S31803 Duplex Stainless Steel combines improved resistance to stress corrosion cracking, pitting, crevice corrosion and high strength. Due to it’s chemical composition A182 F51 duplex stainless steel resists chloride environments and sulphide stress corrosion.
Duplex 2205,Also known as UNS S32205，is a chromium-nickel- molybdenum-nitrogen stainless stee了.
| FORGING SPECIFICATION | COMMON DESIGNATION | ASTM CAST | WROUGHT BAR SPECIFICATION | SERVICE RECOMMENDATIONS (1) |
|---|---|---|---|---|
| ASTM A182 F44 | 20% Chrome; 18% Nickel; 6% Mo; 0.25% C Super Stainless Steel | ASTM A351 Grade CK3MCuN (A995-1B) Super Austenitic | ASTM A479 S31254 | (2.54 SMO) Acetic acid, antibiotics and drugs, bleaching compounds, formic acid, fruit and juices, hot air, hot water, hydrocarbons, hydrochloric acid, organic liquids and acids, nitric acid, organic salts, oxalic acid, phosphoric acid, sea water, sewage, sodium bisulfite, steam, sulfamic acid, 10% sulfuric acid. |
| ASTM A182 F50 | 25.5% Chrome; 5.5% Nickel; 2% Mo; 0.040% C Super Stainless Steel | ASTM A351 Grade CD4MCu (A995-1A) | ASTM A479 S32550 | Concentrate brine, fatty acids, potable water, pulp water, pulp liqurs at 220ºF (104ºC), sea water, steam, sulfuric acid (15-30% @ 140-160ºF (60-71ºC), sulfuric acid (35-40% @ 185ºF (85ºC), plus 5% organics). |
| 24% Chrome; 9.5% Nickel; 4% Mo; 0.080% C Duplex Stainess Steel | ASTM A351 Grade CE8MN (A995-2A) | Concentrate brine, fatty acids, potable water, pulp water, pulp liqurs at 220ºF (104ºC), sea water, steam, sulfuric acid (15-30% @ 140-160ºF (60-71ºC), sulfuric acid (35-40% @ 185ºF (85ºC), plus 5% organics). | ||
| ASTM A182 F51 | 22% Chrome; 5% Nickel; 3% Mo; N; 0.030% C Duplex Stainless Steel | ASTM A351 Grade CD3MN (A995-4A) | ASTM A479 31803** | Concentrate brine, fatty acids, potable water, pulp water, pulp liqurs at 220ºF (104ºC), sea water, steam, sulfuric acid (15-30% @ 140-160ºF (60-71ºC), sulfuric acid (35-40% @ 185ºF (85ºC), plus 5% organics). |
| ASTM A182 F53 | 25% Chrome; 7% Nickel; 4.5% Mo; N; 0.030% C Duplex Stainless Steel Grade 5A | ASTM A995 Grade CE3MN (A995-5A) | Concentrate brine, fatty acids, potable water, pulp water, pulp liqurs at 220ºF (104ºC), sea water, steam, sulfuric acid (15-30% @ 140-160ºF (60-71ºC), sulfuric acid (35-40% @ 185ºF (85ºC), plus 5% organics). Useful where the Pitting Resistance Number (PREN) is required. | |
| ASTM A182 F55 | 25% Chrome; 7.5% Nickel; 3.5% Mo; N; 0.030% C Duplex Stainless Steel Grade 6A | ASTM A995 Grade CD3MWCuN (A995-6A) | Concentrate brine, fatty acids, potable water, pulp water, pulp liqurs at 220ºF (104ºC), sea water, steam, sulfuric acid (15-30% @ 140-160ºF (60-71ºC), sulfuric acid (35-40% @ 185ºF (85ºC), plus 5% organics). Useful where the Pitting Resistance Number (PREN) is required. |
Our production scope:
ASTM/ASME/ANSIB16.5, B16.47, ASME/ANSIB16.48 flange
slip on flange, Weld Neck Flange ,Threaded Flange Blind Flange,
Dimensions : ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges etc.
Standards : ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
Class : 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.
Size : 1/8″ NB TO 48″NB.
Flange Face Type : Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
DIN : DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
ANSI : ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
BS : BS4504 , BS4504, BS1560, BS10
Test Certificates: Manufacturer Test Certificate as per EN 10204 / 3.1
